He was a lieutenant in United States Army from 1989 to 1991.
He is also the author of two novels, "Love Monkey" (Harper Perennial, 2005), which was adapted into a CBS television series in 2006 and "A Christmas Caroline" (William Morrow, 2006).
His wife Sara is the features director for news at Self magazine in New York.
He is a film critic for The New York Post.
In June 2015, Smith received widespread publicity for his publishing of an article in the New York Post claiming "Women are not capable of understanding 'GoodFellas'".